1075506221 has 8 divisors (see below), whose sum is σ = 1105016640. Its totient is φ = 1046371968.

The previous prime is 1075506199. The next prime is 1075506247. The reversal of 1075506221 is 1226055701.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1075506221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1075506521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88241 + ... + 99686.

It is an arithmetic number, because the mean of its divisors is an integer number (138127080).

Almost surely, 2^1075506221 is an apocalyptic number.

It is an amenable number.

1075506221 is a deficient number, since it is larger than the sum of its proper divisors (29510419).

1075506221 is an equidigital number, since it uses as much as digits as its factorization.

1075506221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188083.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 1075506221 is about 32794.9115107817. The cubic root of 1075506221 is about 1024.5605797605.

The spelling of 1075506221 in words is "one billion, seventy-five million, five hundred six thousand, two hundred twenty-one".